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# frozen_string_literal: true
require_relative "../language"
module RuboCop
module Cop
module RSpec
class AggregateExamples < ::RuboCop::Cop::Cop
# @internal
# Node matchers and searchers.
module NodeMatchers
extend RuboCop::NodePattern::Macros
include RuboCop::Cop::RSpec::Language
private
def_node_matcher :example_group_with_several_examples, <<-PATTERN
(block
#{ExampleGroups::ALL.send_pattern}
_
(begin $...)
)
PATTERN
def example_method?(method_name)
%i[it specify example scenario].include?(method_name)
end
# Matches examples with:
# - expectation statements exclusively
# - no title (e.g. `it('jumps over the lazy dog')`)
# - no HEREDOC
def_node_matcher :example_for_autocorrect?, <<-PATTERN
[
#example_with_expectations_only?
!#example_has_title?
!#contains_heredoc?
]
PATTERN
def_node_matcher :example_with_expectations_only?, <<-PATTERN
(block #{Examples::EXAMPLES.send_pattern} _
{ #single_expectation? (begin #single_expectation?+) }
)
PATTERN
# Matches the example with a title (e.g. `it('is valid')`)
def_node_matcher :example_has_title?, <<-PATTERN
(block
(send nil? #example_method? str ...)
...
)
PATTERN
# Searches for HEREDOC in examples. It can be tricky to aggregate,
# especially when interleaved with parenthesis or curly braces.
def contains_heredoc?(node)
node.each_descendant(:str, :xstr, :dstr).any?(&:heredoc?)
end
def_node_matcher :subject_with_no_args?, <<-PATTERN
(send _ _)
PATTERN
def_node_matcher :expectation?, <<-PATTERN
{
(send nil? {:is_expected :are_expected})
(send nil? :expect #subject_with_no_args?)
}
PATTERN
def_node_matcher :single_expectation?, <<-PATTERN
(send #expectation? #{Runners::ALL.node_pattern_union} _)
PATTERN
end
end
end
end
end
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